Electronic device for measuring the characteristics of fastening devices

Abstract

Electronic device for measuring the characteristics of fastening devices, comprising a box-shaped body ( 2 ) traversed by at least one cylinder ( 21 ), rotating with respect to the box-shaped body that transmits the rotary motion received by such a fastening device and a sensor capable of measuring the rotary torque and the rotation angle on said cylinder. Such a device comprises means for detecting the relative rotation between box-shaped body ( 2 ) and rotation driving cylinder ( 21 ).

The invention claimed is: 
     
       1. Electronic device for measuring the characteristics of an industrial screwdriver comprising:
 at least one box-shaped body ( 2 ) traversed by at least one cylinder ( 21 ), adapted to rotate with respect to the box-shaped body which transmits the rotary motion received by said screwdriver, 
 at least one sensor capable of measuring the rotary torque and the rotation angle on said cylinder, 
 means for detecting the relative rotation between the box-shaped body ( 2 ) and the rotation driving cylinder ( 21 ) comprising at least one gyroscope and a control unit ( 24 ) for controlling said at least one sensor, said control unit ( 24 ) comprising at least one command and control electronic board for commanding and controlling said at least one sensor, said command and control electronic board ( 24 ) having transmission means for transmitting via radio the data detected by said at least one sensor to a central unit (U), 
 wherein an electrical connector ( 23 ) is associated with said box-shaped body ( 2 ) and said electrical connector ( 23 ) is fitted into said control unit ( 24 ) whereby said electronic device measures the rotary torque and rotation angle of said industrial screwdriver. 
 
     
     
       2. Device according to  claim 1  wherein the measured value of the relative rotation between the box-shaped body and the cylinder is subtracted from the detected value of the rotation angle of the cylinder with the aim of detecting a more reliable measurement of the industrial screwdriver. 
     
     
       3. Device according to  claim 1  wherein on such box-shaped body an electric connector ( 23 ) is present, in which a connection cable (C) is fitted between the measuring device and a central processing unit (U).